[info] Using makefile-style concurrent boot in runlevel 2. [ 15.767351][ C1] random: crng init done [....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.1.7' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 25.779432][ T94] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 25.869642][ T94] usb 1-1: Using ep0 maxpacket: 16 [ 25.989516][ T94] usb 1-1: config 0 interface 0 altsetting 0 endpoint 0x8F has invalid wMaxPacketSize 0 [ 25.999364][ T94] usb 1-1: config 0 interface 0 altsetting 0 bulk endpoint 0x8F has invalid maxpacket 0 [ 26.009062][ T94] usb 1-1: config 0 interface 0 altsetting 0 endpoint 0x84 has invalid wMaxPacketSize 0 [ 26.018934][ T94] usb 1-1: config 0 interface 0 altsetting 0 bulk endpoint 0x84 has invalid maxpacket 0 [ 26.028691][ T94] usb 1-1: New USB device found, idVendor=0af0, idProduct=7311, bcdDevice=21.99 [ 26.037749][ T94] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 26.047580][ T94] usb 1-1: config 0 descriptor?? [ 26.090569][ T94] hso 1-1:0.0: Can't find BULK OUT endpoint [ 26.096836][ T94] ------------[ cut here ]------------ [ 26.102394][ T94] WARNING: CPU: 1 PID: 94 at net/core/dev.c:8710 rollback_registered_many+0x1ed/0xef0 [ 26.111908][ T94] Kernel panic - not syncing: panic_on_warn set ... [ 26.118475][ T94] CPU: 1 PID: 94 Comm: kworker/1:2 Not tainted 5.5.0-rc6-syzkaller #0 [ 26.126596][ T94] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 26.136631][ T94] Workqueue: usb_hub_wq hub_event [ 26.141627][ T94] Call Trace: [ 26.144892][ T94] dump_stack+0xef/0x16e [ 26.149119][ T94] ? rollback_registered_many+0x170/0xef0 [ 26.154817][ T94] panic+0x2aa/0x6e1 [ 26.158729][ T94] ? add_taint.cold+0x16/0x16 [ 26.163415][ T94] ? printk+0xba/0xed [ 26.167374][ T94] ? kmsg_dump_rewind_nolock+0xd9/0xd9 [ 26.172839][ T94] ? __warn.cold+0x14/0x30 [ 26.177248][ T94] ? __warn+0xd5/0x1c8 [ 26.181292][ T94] ? rollback_registered_many+0x1ed/0xef0 [ 26.186987][ T94] __warn.cold+0x2f/0x30 [ 26.191205][ T94] ? rollback_registered_many+0x1ed/0xef0 [ 26.196900][ T94] report_bug+0x27b/0x2f0 [ 26.201206][ T94] do_error_trap+0x12b/0x1e0 [ 26.205793][ T94] ? rollback_registered_many+0x1ed/0xef0 [ 26.211496][ T94] do_invalid_op+0x32/0x40 [ 26.215895][ T94] ? rollback_registered_many+0x1ed/0xef0 [ 26.221592][ T94] invalid_op+0x23/0x30 [ 26.225733][ T94] RIP: 0010:rollback_registered_many+0x1ed/0xef0 [ 26.232045][ T94] Code: 05 00 00 31 ff 44 89 fe e8 d0 ef 76 fc 45 84 ff 0f 85 49 ff ff ff e8 92 ee 76 fc 0f 1f 44 00 00 e8 88 ee 76 fc e8 83 ee 76 fc <0f> 0b 48 89 ef e8 19 0d 21 fd 31 ff 89 c5 89 c6 e8 9e ef 76 fc 40 [ 26.251628][ T94] RSP: 0018:ffff8881d5d4f000 EFLAGS: 00010293 [ 26.257707][ T94] RAX: ffff8881d6cae200 RBX: ffff8881cdfba000 RCX: ffffffff84c82260 [ 26.265658][ T94] RDX: 0000000000000000 RSI: ffffffff84c8227d RDI: 0000000000000001 [ 26.273649][ T94] RBP: ffff8881cdfba068 R08: ffff8881d6cae200 R09: fffffbfff0f8250d [ 26.281613][ T94] R10: fffffbfff0f8250c R11: ffffffff87c12867 R12: ffff8881d5d4f150 [ 26.289563][ T94] R13: dffffc0000000000 R14: ffff8881d5d4f0e8 R15: 0000000000000000 [ 26.297528][ T94] ? rollback_registered_many+0x1d0/0xef0 [ 26.303272][ T94] ? rollback_registered_many+0x1ed/0xef0 [ 26.308984][ T94] ? unregister_netdev+0xe/0x20 [ 26.313816][ T94] ? generic_xdp_install+0x490/0x490 [ 26.319084][ T94] ? __mutex_lock+0x42b/0x1360 [ 26.323826][ T94] ? find_held_lock+0x2d/0x110 [ 26.328568][ T94] ? unregister_netdev+0xe/0x20 [ 26.333399][ T94] ? mutex_trylock+0x2c0/0x2c0 [ 26.338141][ T94] rollback_registered+0xf2/0x1c0 [ 26.343148][ T94] ? rollback_registered_many+0xef0/0xef0 [ 26.348846][ T94] ? _dev_crit+0x109/0x109 [ 26.353252][ T94] ? kasan_unpoison_shadow+0x30/0x40 [ 26.358536][ T94] unregister_netdevice_queue+0x1d7/0x2b0 [ 26.364237][ T94] unregister_netdev+0x18/0x20 [ 26.369008][ T94] hso_free_net_device+0xff/0x300 [ 26.374013][ T94] hso_create_net_device+0x76d/0x9c0 [ 26.379299][ T94] hso_probe+0x1019/0x1b7b [ 26.383701][ T94] usb_probe_interface+0x310/0x800 [ 26.388797][ T94] ? usb_probe_device+0x140/0x140 [ 26.393807][ T94] really_probe+0x290/0xad0 [ 26.398295][ T94] driver_probe_device+0x223/0x350 [ 26.403393][ T94] __device_attach_driver+0x1d1/0x290 [ 26.408757][ T94] ? driver_allows_async_probing+0x160/0x160 [ 26.414716][ T94] bus_for_each_drv+0x162/0x1e0 [ 26.419549][ T94] ? bus_rescan_devices+0x20/0x20 [ 26.424564][ T94] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 26.430366][ T94] ? lockdep_hardirqs_on+0x382/0x580 [ 26.435637][ T94] __device_attach+0x217/0x390 [ 26.440391][ T94] ? device_bind_driver+0xd0/0xd0 [ 26.445407][ T94] bus_probe_device+0x1e4/0x290 [ 26.450247][ T94] device_add+0x1459/0x1bf0 [ 26.454738][ T94] ? wait_for_completion+0x3c0/0x3c0 [ 26.460011][ T94] ? device_link_remove+0x110/0x110 [ 26.465199][ T94] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 26.470990][ T94] usb_set_configuration+0xe47/0x17d0 [ 26.476345][ T94] generic_probe+0x9d/0xd5 [ 26.480744][ T94] usb_probe_device+0xaf/0x140 [ 26.485490][ T94] ? usb_suspend+0x5f0/0x5f0 [ 26.490062][ T94] really_probe+0x290/0xad0 [ 26.494549][ T94] driver_probe_device+0x223/0x350 [ 26.499641][ T94] __device_attach_driver+0x1d1/0x290 [ 26.504993][ T94] ? driver_allows_async_probing+0x160/0x160 [ 26.510953][ T94] bus_for_each_drv+0x162/0x1e0 [ 26.515787][ T94] ? bus_rescan_devices+0x20/0x20 [ 26.520794][ T94] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 26.526579][ T94] ? lockdep_hardirqs_on+0x382/0x580 [ 26.531841][ T94] __device_attach+0x217/0x390 [ 26.536581][ T94] ? device_bind_driver+0xd0/0xd0 [ 26.541582][ T94] bus_probe_device+0x1e4/0x290 [ 26.546417][ T94] device_add+0x1459/0x1bf0 [ 26.550915][ T94] ? device_link_remove+0x110/0x110 [ 26.556104][ T94] usb_new_device.cold+0x540/0xcd0 [ 26.561219][ T94] hub_event+0x21cb/0x4300 [ 26.565618][ T94] ? hub_port_debounce+0x350/0x350 [ 26.570715][ T94] ? find_held_lock+0x2d/0x110 [ 26.575461][ T94] ? mark_held_locks+0xe0/0xe0 [ 26.580207][ T94] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 26.585733][ T94] ? rcu_read_lock_bh_held+0xb0/0xb0 [ 26.590997][ T94] process_one_work+0x945/0x15c0 [ 26.595933][ T94] ? pwq_dec_nr_in_flight+0x310/0x310 [ 26.601291][ T94] ? do_raw_spin_lock+0x129/0x290 [ 26.606294][ T94] worker_thread+0x96/0xe20 [ 26.610883][ T94] ? process_one_work+0x15c0/0x15c0 [ 26.616072][ T94] kthread+0x318/0x420 [ 26.620123][ T94] ? kthread_create_on_node+0xf0/0xf0 [ 26.625473][ T94] ret_from_fork+0x24/0x30 [ 26.630640][ T94] Kernel Offset: disabled [ 26.634989][ T94] Rebooting in 86400 seconds..